import axios from 'axios'
import qs from 'qs'
import { ElNotification, ElMessageBox, ElMessage, ElLoading } from 'element-plus'
import errorCode from '@/utils/errorCode'
import cache from '@/utils/cache'
import { saveAs } from 'file-saver'
import { useUserStore } from '@/store'
import feedback from '@/utils/feedback'
// import { appPath } from '@/seed-application'
import { getUrlParams } from "@/utils/system";

const getToken = () => 'mytoken_is_mytoken'

// 验证是否为blob格式
function blobValidate(data) {
  return data.type !== 'application/json'
}

let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };

const params = getUrlParams(location.href.split('#')[0])
axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
axios.defaults.headers['owner'] = params.owner
axios.defaults.headers['appName'] = params.appName

// 创建axios实例
const service = axios.create({
  // axios中请求配置有baseURL选项，表示请求URL公共部分
  baseURL: import.meta.env.VITE_BASE_API,
  // 超时
  timeout: 100000
})

// request拦截器
service.interceptors.request.use(config => {
  // 是否需要设置 token
  const isToken = (config.headers || {}).isToken === false
  // 是否需要防止数据重复提交
  const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
  if (getToken() && !isToken) {
    config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
  }

  // get请求映射params参数
  if (config.method === 'get' && config.params) {
    // let url = config.url + '?' + qs.stringify(config.params);
    // url = url.slice(0, -1);
    // config.params = {};
    // config.url = url;
  }

  if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
    const requestObj = {
      url: config.url,
      data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
      time: new Date().getTime()
    }

    const requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
    const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
    if (requestSize >= limitSize) {
      console.warn(`[${config.url}]: ` + '请求数据大小超出允许的5M限制，无法进行防重复提交验证。')
      return config;
    }

    // const sessionObj = cache.session.getJSON('sessionObj')
    // if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
    //   cache.session.setJSON('sessionObj', requestObj)
    // } else {
    //   const s_url = sessionObj.url;                // 请求地址
    //   const s_data = sessionObj.data;              // 请求数据
    //   const s_time = sessionObj.time;              // 请求时间
    //   const interval = 1000;                       // 间隔时间(ms)，小于此时间视为重复提交
    //   if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
    //     const message = '数据正在处理，请勿重复提交';
    //     console.warn(`[${s_url}]: ` + message)
    //     return Promise.reject(new Error(message))
    //   } else {
    //     cache.session.setJSON('sessionObj', requestObj)
    //   }
    // }
  }
  return config
}, error => {
  console.log(error)
  Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
  // 未设置状态码则默认成功状态
  const code = res.data.code || 200;
  // 获取错误信息
  const msg = errorCode[code] || res.data.msg || errorCode['default']
  // 二进制数据则直接返回
  if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
    return res.data
  }

  if (code === 401) {
    if (!isRelogin.show) {
      isRelogin.show = true;
      ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', { confirmButtonText: '重新登录', cancelButtonText: '取消', type: 'warning' }).then(() => {
        isRelogin.show = false;
        useUserStore().remove()
        const owner = params.owner
        const appName = params.appName
        let query = owner ? 'owner=' + owner : ''
        if(query) {
          query += (appName ? `&appName=${appName}` : '')
        } else {
          query = appName ? `appName=${appName}` : ''
        }
        location.href = query ? `?${query}` : ''
      }).catch(() => {
        isRelogin.show = false;
      });
    }
    return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
  } else if (code === 500) {
    if (msg && msg !== "") {
      feedback.alertError(msg)
    } else {
      feedback.alertError(`服务器异常，请稍后再试(${code})`)
    }
    return Promise.reject(new Error(msg))
  } else if (code === 601) {
    ElMessage({ message: msg, type: 'warning' })
    return Promise.reject(new Error(msg))
  } else if (code === 9401) {
    ElMessageBox.confirm('请求未授权！', '系统提示', { confirmButtonText: '重新登录', cancelButtonText: '取消', type: 'warning' }).then(() => {
      // location.href = '/db-manage/sign';
    });
  } else if (code !== 200) {
    ElNotification.error({ title: msg })
    return Promise.reject('error')
  } else {
    return Promise.resolve(res.data)
  }
},
  error => {
    console.log('err' + error)
    let { message } = error;
    if (message == "Network Error") {
      message = "后端接口连接异常";
    } else if (message.includes("timeout")) {
      message = "系统接口请求超时";
    } else if (message.includes("Request failed with status code")) {
      message = "系统接口" + message.substr(message.length - 3) + "异常";
    }
    ElMessage({ message: message, type: 'error', duration: 5 * 1000 })
    return Promise.reject(error)
  }
)

// 通用下载方法
// export function download(url, params, filename, config) {
//   downloadLoadingInstance = ElLoading.service({ text: "正在下载数据，请稍候", background: "rgba(0, 0, 0, 0.7)", })
//   return service.post(url, params, {
//     transformRequest: [(params) => { return qs.stringify(params) }],
//     headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
//     responseType: 'blob',
//     ...config
//   }).then(async (data) => {
//     const isBlob = blobValidate(data);
//     if (isBlob) {
//       const blob = new Blob([data])
//       saveAs(blob, filename)
//     } else {
//       const resText = await data.text();
//       const rspObj = JSON.parse(resText);
//       const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
//       ElMessage.error(errMsg);
//     }
//     downloadLoadingInstance.close();
//   }).catch((r) => {
//     console.error(r)
//     ElMessage.error('下载文件出现错误，请联系管理员！')
//     downloadLoadingInstance.close();
//   })
// }

export const get = async (url, params = {}) => {
  // feedback.loading('数据请求中.....')
  try {
    const res = await service.get(url, { params })
    return res.data
  } finally {    
    // feedback.closeLoading()
  }
}

export const post = async (url, data = {}) => {
  // feedback.loading('数据保存中.....')
  try {
    const res = await service.post(url, data)
    return res.data
  } finally {    
    // feedback.closeLoading()
  }
}

export const put = async (url, data = {}) => {
  // feedback.loading('数据更新中.....')
  try {
    const res = await service.put(url, data)
    return res.data
  } finally {    
    // feedback.closeLoading()
  }
}

export const remove = async (url, params = {}) => {
  feedback.loading('数据删除中.....')
  try {
    const res = await service.delete(url, { params })
    return res.data
  } finally {    
    feedback.closeLoading()
  }
}

export default service
